Over the course of their evolutionary histories, the timing of flowering, the spacing of plants, and the nectar rewards of flowering plants have influenced the foraging behavior of bees, which in turn has influenced the morphology of flowers

This process is an example of
A) competitive exclusion.
B) convergent evolution.
C) adaptive radiation.
D) niche partitioning.
E) coevolution.


E

Biology & Microbiology

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Hawkmoths are most likely to be attracted to flowers

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Which of the following contributes to the stability of the DNA double helix?

A) hydrophobic interactions between aromatic bases at the center of the double helix B) hydrogen bonding between the phosphate and sugar groups in the backbone of the double helix C) covalent bonding between complementary purine and pyrimidine bases. D) ionic bonds between the negatively charged phosphate groups and the positively charged pyrimidine bases. E) hydrophobic interactions between aromatic bases at the center of the double helix and ionic bonds between the negatively charged phosphate groups and the positively charged pyrimidine bases

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The main advantage of YAC (yeast artificial chromosome) over other vectors in cloning human genes

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In a certain population, the allele frequencies of the M and N blood group alleles are 0.6 and 0.4,

respectively. How many of a population of 500 would be expected to have MN blood type if the population is in genetic equilibrium for the MN locus? a. 200 b. 220 c. 240 d. 260 e. 300

Biology & Microbiology